同根派生 magnetic needle相关词英汉例句用作名词 (n.)The needle of the compass shows that we're facing south.指南针上的磁针显示我们处在朝南的位置。The rectangular brass frame surrounds a high-visibility magnetic needle that pivots on an adjustable support.一个清楚可见的磁针以一可移动的轴支撑,旁边的矩形框架是黄铜制成的。magnetic needle更多例句